Method of manufacturing ball and roller bearings



March 29, 1938.

METHOD OF MANUFAC TURING BALL AND ROLL Filed Dec. 26

UNITED STATES PATENT OFFICE METHOD OF -MANUFACTURING BALL AND ROLLER BEARINGS Robert Annen, Bienne, Switzerland, assignor to the firm Louis Muller & Cie S. A., Fabrique dhorlogerie La Champagne, Bienne, Switzerland, a joint stock company of Switzerland Application December 26, 1935, Serial No. 56,286 In Switzerland December 26, 1934 Claims. (Cl. 29-1484) The machining of the race rings of ball and rollinto the whole simultaneously. The rings l5, l5 er bearings is always very expensive because it are then flanged over the rings 16, I 6. The regularequires a great precision and a perfect finish. tion of the play is then made by a special opera- The method of manufacturing according to the tion, consisting in compressing one of therings 5 present invention avoids this disadvantage and is l8 and IE! or by compressing both.

characterized in that the regulation of the play The roller bearing of the Fig. 4 has its play regof the race arrangement is effected by a permaulated during the mounting by a permanent denent deforming of at least one member of this formation of the race ring 22 by means of its arrangement after this bearing has been comflanged borders 22, 22'. The pressure of the 10 pletely assembled. hoop 23 on the borders 22', 22' of the race ring The annexed drawing represents as examples 22 suffices for diminishing the inside diameter of by fractional sections eight working forms of the this race for several hundredths of millimeters. method. The distance ring 23. and the inner race ring 2| According to the Figure l the ring I maintains must be introduced into the rings 22 and 23 when the race rings 2 and 3 in their normal working pothe play is regulated. sition. These races could be made of stamped In the Fig. 5 when the assembling of the bearsheet steel and are adjusted to the inner ring I. ing has been made, the regulation of the play is After having forced the rings 2 and 6 upon the obtained by compressing more or less the rings ring I, the axis of the bearing being arranged 24, 24 and 25, 25 in the zones 28, 29, and 3|, perpendicularly to the mounting tool, the diswhich have been annealed previously after the 20 tance ring 5 with the balls is placed upon the hardening.

ring 2, then the outer ring 4 is slipped over the The bearing represented by the Fig. 6 is like that whole. This latter ring in spite of its hollow form of Fig. 3, the rings and 36 having beenomitted. can be slipped over the distance ring 5 because The race rings 32, 32 are annealed after the hardthe balls have a suflicient play. By a special op-, ening at their tubular portions 32', 32' beaded at eration the borders l of the ring I are bent up to one border on the rings 33, 33. To the same therseize the rings 2 and 3 and are compressed until mic operation are subjected the portions 35, 36 the required play has been obtained for the efllwhich are the deformable portions of the rings 33, cient operation of the bearing. The rings 2, 3 and 33 and which are compressed for regulating the n 4 supporting the pressures of the bearing are play.

hardened. Due to this treatment the diameters The Figures 7 and 8 are bearings similar to of said rings have changed for several hundredths those of the Figs. 5 and 6. In order to facilitate of millimeters more or less. the deforming of the zones 4|, 42, 43 and 44 of In taking these changes into account and in bearing in Fig. '7 these zones comprise each a coniorder to avoid a subsequent machining after the cal portion permitting a slight gliding of these hardening the rings 2, 3 and 4 are assembled in portions upon each other. This gliding sumces such a way, that the hearing has always too much for giving an easy regulating of the races 31, 31 play. Then this play is regulated by compressing and 38, 38. more or less the ring 6 which is the deformable The conical portions l6" and I8" of these member. races l6, it of the Fig. 8 are sufficiently com- The bearing according to the Fig. 2 intended to pressible to aflord a. good regulating of the play of support simultaneously the radial and axial the ball bearing. stresses comprises a tube 1 to which the race What I claim is:- rings 8 and 9 are riveted. One the outside of the 1, Method of manufacturing n bearings bearing the ring I3 is bent up over the two race ing race rings made of stamped sheet metal, said rings d H and the hoops p method consisting in forcing and riveting two s ntin t e deformable members will be o half rings forming an inner race provided with pr ss d m r or s for regulating h a compressible means between them upon an inner The arr ng ment pr nt d by the Fig. 3 has supporting ring, in placing the balls with the disan outer ring made in two pieces. In fact the tance ring into this inner race, in placing the outrings l5, l5 are madeflrst in one piece and cut in er race symmetrically to the inner race leaving two at a', and likewise the ring It, It has been cut some clearance for the balls and finally in effectin two at a before being hardened. After having ing the operative condition of the bearing by complaced the rings l8, l3 and the distance ring 11 pressing said compressible means accordingly.

into the rings l5, IS the rings l6, l6 are forced 2. Method of manufacturingball bearingshaving race rings made of stamped method consisting in forcing and riveting two half rings forming an inner race provided with a compressible ring inserted between said two half rings upon an inner supporting ring, in placing the balls with the distance ring into this inner .race, in placing two half rings having a compressible ring inserted between them and forming the outer race symmetrically to'the inner race, in containing this outer race by an outer supporting ring while leaving some clearance for the balls, and finally in eifecting the final operative condition of the bearingby compressing said compressible rings accordingly. I

3. Method of manutacturing ball bearings having race rings made of stamped sheet metal, said method consisting in forcing and riveting two half sheet metal, said rings forming an inner race and provided with compressible edges upon an inner supporting ring, in placing the balls with the distance ring into this inner race, in placing and riveting two half rings having compressible edges and forming the- 

